trezor/blockbook

:blue_book: Trezor address/account balance backend

Stars: 794
Forks: 748
Open beginner issues: 0
Indexed issues: 36
Avg merge: 4d 9h
Merged PRs (30d): 35

Dominant language: Go
License: AGPL-3.0
Last GitHub push: Sep 15, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

Open All

36 open issues indexed

Flaky post-deploy OpenAPI e2e tests on bsc and ethereum-classic (sampler design limits) Open

github_actions

Difficulty 4/5 3-5 days Newbie friendliness 68/100

trezor/blockbook#1798 · Opened Sep 16, 2026
eth: details=basic decodes the whole token list it never reads Open

Difficulty 4/5 3-5 days Newbie friendliness 74/100

trezor/blockbook#1790 · Opened Sep 14, 2026
Storage: ~55% of the index is txid copies – research and optimization options Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

trezor/blockbook#1786 · Opened Sep 14, 2026
eth: remove ENS support (reverse aliases and forward .eth → address resolution) Open

enhancement go

Difficulty 5/5 Over a week Newbie friendliness 35/100

trezor/blockbook#1783 · Opened Sep 10, 2026
eth: cache block header fields (timestamp, baseFeePerGas) by hash in GetTransaction Open

Difficulty 4/5 3-5 days Newbie friendliness 68/100

trezor/blockbook#1782 · Opened Sep 10, 2026
EVM: fetch receipts per block (eth_getBlockReceipts) and add an operator-selectable tx-cache fill mode Open

enhancement performance

Difficulty 5/5 Over a week Newbie friendliness 45/100

trezor/blockbook#1781 · Opened Sep 10, 2026
eth: privatePending txids are ignored, so a pending tx vanishes when the client lands on a Blockbook that never saw it Open

trezor/blockbook#1773 · 1 assignee · Opened Sep 8, 2026
sync: ParallelConnectBlocks deadlocks when a worker exits on a tail block without producing it (bsc-b4 stuck 2026-09-06) Open

Difficulty 4/5 3-5 days Newbie friendliness 68/100

trezor/blockbook#1767 · Opened Sep 7, 2026
Per-transaction debug_traceBlockByHash errors are silently swallowed, permanently under-indexing internal data Open

Difficulty 3/5 1-2 days Newbie friendliness 58/100

trezor/blockbook#1760 · Opened Sep 2, 2026
EIP-7702 delegated EOAs trigger endless "Contract ... not found in DB" warnings Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

trezor/blockbook#1759 · Opened Sep 2, 2026
EVM sync: 3 of 4 block-fetch RPCs per new block are redundant (eth_getBlockByNumber) Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

trezor/blockbook#1757 · Opened Sep 2, 2026
blockbook-api.ts is not reproducible from its generator Open

bug go

Difficulty 4/5 3-5 days Newbie friendliness 52/100

trezor/blockbook#1734 · Opened Aug 19, 2026
build: update RocksDB 9.10.0 → 10.10.1 and grocksdb 1.9.8 → 1.10.8 Open

dependencies enhancement

trezor/blockbook#1731 · 1 comment · 1 assignee · Opened Aug 18, 2026
eth: unknown contract metadata is probed per contract, per request, forever Open

trezor/blockbook#1727 · 1 assignee · Opened Aug 14, 2026
eth: staking pool data costs 6 serialized eth_calls on every account request Open

trezor/blockbook#1726 · 1 assignee · Opened Aug 14, 2026
getBalanceHistory: parallelize per-tx reads, aggregate into buckets, batch Ethereum-type backend fetches Open

performance

Difficulty 5/5 Over a week Newbie friendliness 38/100

trezor/blockbook#1721 · 1 comment · Opened Aug 12, 2026
Improve 1inch fees for EVMs (focus on Ethereum) Open

Difficulty 5/5 Over a week Newbie friendliness 45/100

trezor/blockbook#1720 · Opened Aug 12, 2026
Hybrid-standard contracts (ERC-404 style) lose one token facet in AddrContract Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

trezor/blockbook#1718 · Opened Aug 11, 2026
Grafana panels have mixed names Open

trezor/blockbook#1717 · 1 comment · 1 assignee · Opened Aug 11, 2026
eth: getEthereumTokensTransfers leaves a zero-valued TokenTransfer when contract info lookup fails Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 75/100

trezor/blockbook#1715 · Opened Aug 10, 2026
eth: pending ERC-20 transferFrom is reported as an NFT transfer (shared 0x23b872dd selector) Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 68/100

trezor/blockbook#1714 · Opened Aug 10, 2026
eth: rbf=true on pending EVM transactions is incidental, and wallet cancel/speed-up depends on it Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 72/100

trezor/blockbook#1713 · Opened Aug 10, 2026
eth: pending ERC-20 transfer with trailing calldata is not parsed, so the payee never sees it Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 68/100

trezor/blockbook#1712 · Opened Aug 10, 2026
eth: a single null from the backend permanently deletes a live pending transaction Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

trezor/blockbook#1709 · Opened Aug 7, 2026
eth: wrapping native asset (WETH deposit/withdraw) produces no tokenTransfers — wrapped token is not auto-discovered on the address Open

trezor/blockbook#1702 · 1 assignee · Opened Aug 4, 2026
websocket: subscribeNewBlock broadcast re-serializes/compresses payload per connection (O(N) → O(distinct ids)) Open

performance

Difficulty 4/5 3-5 days Newbie friendliness 68/100

trezor/blockbook#1697 · 1 comment · Opened Aug 3, 2026
eth: batch eth_getLogs over block ranges during initial sync to reduce request volume Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

trezor/blockbook#1684 · Opened Jul 29, 2026
Tron balance history goes negative: internal-transaction inflows never counted (processInternalTransactions off for Tron) Open

trezor/blockbook#1660 · 1 assignee · Opened Jul 27, 2026
Failed internal calls are indexed as real transfers (EVM & Tron) Open

bug

Difficulty 5/5 Over a week Newbie friendliness 25/100

trezor/blockbook#1621 · Opened Jul 10, 2026
eth: O(n^2) NFT holdings insertion and full-row repack for large per-address token lists Open

performance

Difficulty 5/5 Over a week Newbie friendliness 35/100

trezor/blockbook#1620 · 1 comment · Opened Jul 10, 2026
NFT Rollback Bug Causes Incorrect Owner State and DB Corruption on Block Reorganization Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 55/100

trezor/blockbook#1617 · 1 comment · Opened Jul 10, 2026
blockbook-api.ts is not reproducible from typescriptify (breaks OpenAPI parity on regen) Open

trezor/blockbook#1566 · 1 assignee · Opened Jun 15, 2026
BCH: wrong isAddress value in vout of get transaction endpoint Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

trezor/blockbook#1300 · Opened Aug 1, 2025
Request for Font Replacement Due to Licensing Concerns Open

trezor/blockbook#1060 · 3 comments · 1 assignee · Opened Apr 3, 2024
[Feature] provide information about replaced transaction Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

trezor/blockbook#556 · Opened Jan 15, 2021
Limit RocksDB memory requirements Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

trezor/blockbook#43 · 18 comments · Opened Aug 28, 2018

A short digest of beginner-friendly GitHub issues.